HALIFAX - A mother given an 18-month conditional sentence last year for having sex with her son's 12-year-old friend must now serve the rest of her time under house arrest. She was originally sentenced to 18 months' probation, but the Crown appealed, asking for jail time. However, the appeal court ordered her to spend the remaining 10 months of her sentence at home. She may leave only to buy groceries or get medical treatment for herself or her children.